Home / 13,839.61-19,098.66-7,872.43

Finding the Fourth Proportional to 13,839.61, 19,098.66 and 7,872.43

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Solution

The fourth proportional to 13,839.61, 19,098.66 and 7,872.43 is: 10,863.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,839.61 : 19,098.66 = 7,872.43 : x
  2. Step 2: Convert to fraction form
    13,839.61/19,098.66 = 7,872.43/x
  3. Step 3: Cross multiply
    13,839.61x = 19,098.66 × 7,872.43
  4. Step 4: Simplify right side
    13,839.61x = 150,352,892.96
  5. Step 5: Solve for x
    x = 150,352,892.96/13,839.61
  6. Step 6: Final answer
    x = 10,863.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.